/// <summary>
/// This constructor is only for serialisation.
/// </summary>
public CollisionArea()
{
_type = CollisionAreaType.Common;
_name = "dummyarea";
_collisionMaterial = CollisionMaterialType.Regular;
_area = new Circle(Vector2.Zero, 10);
}
public CollisionArea(string name, IGeomPrimitive area, Gob owner, CollisionAreaType type, CollisionMaterialType collisionMaterial)
{
_type = type;
_collisionMaterial = collisionMaterial;
_name = name;
_area = area;
_owner = owner;
if (owner != null && owner.IsRegistered) Initialize();
}
private static void SetCollidesWith(CollisionAreaType who, params CollisionAreaType[] collidesWith)
{
var union = 0;
foreach (var with in collidesWith) union |= 1 << (int)with;
g_collidesWith[(int)who] |= (Category)union;
// Symmetric closure for Farseer.
foreach (var with in collidesWith) g_collidesWith[(int)with] |= (Category)(1 << (int)who);
}
public void Enable()
{
if (!_typeBeforeDisabling.HasValue) throw new ApplicationException("CollisionArea is not disabled");
Type = _typeBeforeDisabling.Value;
_typeBeforeDisabling = null;
}
public void Disable()
{
if (_typeBeforeDisabling.HasValue) throw new ApplicationException("CollisionArea is already disabled");
_typeBeforeDisabling = Type;
Type = CollisionAreaType.Disabled;
}
public void Deserialize(NetworkBinaryReader reader, SerializationModeFlags mode, int framesAgo)
{
if ((mode & SerializationModeFlags.ConstantDataFromServer) != 0)
{
_type = (CollisionAreaType)reader.ReadInt32();
_name = reader.ReadString();
_collisionMaterial = (CollisionMaterialType)reader.ReadByte();
_area.Deserialize(reader, SerializationModeFlags.AllFromServer, framesAgo);
}
}
/// <summary>
/// Returns distance to the closest collision area, if any, along a directed line segment.
/// Collision areas for whom <paramref name="filter"/> returns false are ignored.
/// </summary>
public float? GetDistanceToClosest(Vector2 from, Vector2 to, Func<CollisionArea, bool> filter, CollisionAreaType[] areaTypes)
{
return PhysicsHelper.GetDistanceToClosest(_world, from, to, filter, areaTypes);
}
